Wig base



FIG. 1 is a top plan view of a wig base according to our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front view thereof, the opposite rear view being a mirror image thereof; and,

FIG. 4 is a right side view thereof, the opposite left side view being a mirror image thereof. 

CLAIM The ornamental design for wig bases, as shown and described. 